Subtract 5/50 from 21/18, Solve 1 3/18

Subtract 5/50 from 21/18

1^st number: 1 3/18, 2^nd number: 5/50

21/18 - 5/50 is 16/15.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 50 is 450

Next, find the equivalent fraction of both fractional numbers with denominator 450
For the 1st fraction, since 18 × 25 = 450,
21/18 = 21 × 25/18 × 25 = 525/450
Likewise, for the 2nd fraction, since 50 × 9 = 450,
5/50 = 5 × 9/50 × 9 = 45/450
Subtract the two like fractions:
525/450 - 45/450 = 525 - 45/450 = 480/450
After reducing the fraction, the answer is 16/15
In mixed form: 11/15

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